McData / Brocade Mixed environment issues

We have 2 fabrics with switches from both brands (interopmode 3). As i'm more comfortable with Brocade products i was expecting to be able to use all the usual commands as alishow, alicreate ... but none work in this interopmode.

If i connect on the McData switches, i can execute a "show activeAlias" without any problem and get all aliases binded to device WWN. Unfortunately these aliases are invisible for the Brocade product, if i launch a nodefind "one of the aliase found on the Mcdata" i've no results. I can't create alias on Brocade switches.

In a cfgshow, the "Defined configuration" is empty ...

I don't understand why the interopmode are called McData Interopmode and McData Open Fabric Mode instead of Brocade Interopmode and Brocade Open Fabric Mode. It seems Brocade adapt their switches to work with McData instead of adapting McData to work with Brocade.